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Shaped crystal growth of PbTe by the open tube technique
Author(s) -
Klimakow A. M.,
Höfer Ch.
Publication year - 1984
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170191106
Subject(s) - materials science , whiskers , octahedron , crystallography , crystallization , tetrahedron , crystal (programming language) , tube (container) , dislocation , crystal growth , phase (matter) , crystal structure , chemical engineering , chemistry , composite material , programming language , organic chemistry , computer science , engineering
The possibility of growing shaped A IV B VI crystals from the vapour phase by the open tube technique was investigated on PbTe. The thermodynamic conditions to reproducible prepare several habits of PbTe crystals — whiskers, tetrahedral prisms and cubes, platelets (a), dendrites, cubic and octahedral skeletons (b) as well as their properties were examined. The crystalline habits (a) are characterized by perfectly mirror‐like (100) surfaces and low dislocation densities. The type and concentration of charge carriers are mainly determined by the vapour composition within the crystallization zone and very from n = 3 × 10 17 to p = 1 × 10 19 cm −3 . These properties are the reason of the interest in shaped PbTe crystals for the aim of IR optoelectronic devices.